Boiler-tube tile.



PATENTED JAN. 1'7, 1905.

l G'. Y. BONUS.

- BUILBR TUBE TILE. APPLICATION FILED DE() 3 1903 V No. 780,478.

'- UNITED STATES l Patented January 1'?, 1905.-

PATENT OFFICE.

GEORGE Y. BONUS, OF CHICAGO, ILLINOIS, ASSIGNOR TO I-IANNAH L.

. BONUS, OF CHICAGO, ILLINOIS.

Bo| LER-TUBE TILE.

SPECIFICATION forming part of Letters Patent N0- 780,78, dated January 17', 1905. Application filed December 3, 1903. Serial No. 183,547. i

fo LZZ zzz/tum. t Hetty concern.

Be it known that I, GEORGE Y. BONUS, a citizen of the United States, residing at Chicago, in the county of Cook and State of'Illinois, have invented a new and useful BoilerrFube Tile, of which the following is a speciiication. i A i 1 My invention relates to improvementsin tube-tiles which are used to .protect the row of tubes ina water-tube' boiler from the in-y tense heat directly above the fire-box, and has for its objects, first, to provide a better protection from extremeV heat than has heretofore been possible; second,v to reducethe scalding and burning ofthe tubes, and, third, to economile in the construction and fitting of the tilewa Heretofore no tiles were made toiit closely around the tubes, thus leaving the lower row of tubes entirely exposed to the extreme heat. Sometimes when it was desired to form a baffle for the `flame a layer of tiles was laid on top of the lower row of tubes; but the lower row of tubes were not protected from the extreme heat, which soon burned them so they ,had to be replaced by new ones. These objections arel all eliminated by the use of -my invention.

The tile is supported by the tubes by partly extending over the upper side of the same. The tile is made in sections, so that as many sections as may be desired can be placed on the tubes. When it is desired to protect the lower row of tubes from the heat of the furnace, only the bottom sides of the tubes need be covered with tile; but to have the tile hang from the tubes it is necessary to extend a portion of the tile over the top of the tubes. I'

construct each section of the tile alike and have that part below the tube large enough to protect the entire lower side of the tube for a length equal to the length of that particular section of tile and that portion of the tile above the tube extend far enough around the tube to support the tile and still permit of the removal of the tile from the tube.

tion of a Water-tube boiler, showing my improved tube-tiles applied tothe lower row of tubes. Fig. 2 isla vertical section on line 2 2 of Fig. 1, and Fig. 3 is a detail sectional view showing a modified form of my invention.

Similar reference characters refer to similar parts throughout the several views.

I n the drawings, 5 represents the lower tubes of aboiler, and 6 represents otherA tubes above. The tiles 7 are substantially semicylindrical in form to t over the tubes 5 and are of such a thickness that they close the space between the tubes 5. I preferably construct the tiles with an offset 8, against which the end 9 of the adjacent tile rests. A portion of the tile may be enlarged to form an air-space lO between the tube 5 and the tile 7.

In Fig. Bis shown a modified form of my invention, in which the offset 8 and the airspace lO are omitted. i

It will be understood that only that portion of the lower row of tubes is protected by the tile which is liable to become damaged by excessive heat, the balance of the lower tubes being bare.

To place the tile on the tubes, each piece of tile is lifted into position on a bare portion of the tube, as indicated by dotted lines in Fig. 1. Then it is turned-to the right as viewed in Fig. l until it is in its proper position on the tube, when it is -moved longitudinally along the tube to its final position. To remove a tile, this operation is reversede'. e. the tile is first moved longitudinally along the shaft out of the path of the adjacent tiles, then it is turned about the tube, and finally lowered away from the same. It is obvious that the turning of the tile about the tube in one direction locks the same into position and the reverse turning permits it to be removed from the tube.

This construction of tile may be used on the upper tubes as well as the lower or any other tubes, if desired.

It will be noticed that two tubes or their equivalent are required to lock the tile into position and that the thickness of a tile is slightly less than the space between two tubes.

Having fully described my invention, what I claim, and desire t0 secure by Letters Patent of the United States, is

1. A boiler-tube tile of a semicylindrical form having a lower shielding portion and an upper supporting portion extending over a portion of the tube,said upper supporting portion being held in position by the lower end of the tile contacting with the adjacent tile.

2. In a baffle for water-tube boilers the combination of a lower row of tubes, a series of semicylindrically-formed tiles supported on each tube, each tile being'of uniform thick- GEORGE Y. BONUS.

IITitnesses:

R. J. JACKER, A. U. DECKER. 

